Tight 4 and 5-designs in projective spaces
It was shown by Bannai and Hogger that tight t-designs in projective spaces over \({\mathbb{R}},{\mathbb{C}},{\mathbb{H}},{\mathbb{O}}\), satisfy \(t\leq 5\). Here, it is shown that there are not tight 4-designs and the only two tight 5- designs are already known.
scientific article; zbMATH DE number 4103078
scientific article